<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- <style>
        p {
            color: red;
            font-size: 30px;
        }
    </style> -->
    <!-- <style>
        div {
            color: red;
        }
    </style> -->
    <link rel="stylesheet" href="test1.css">
</head>
<body>
    <!-- <p>hello</p> -->
    <div >你好呀</div>
</body>
</html>